#include <bits/stdc++.h>

using namespace std;

class Solution {
public:
    vector<long long> sumOfThree(long long num)
    {
	vector<long long> res;
	if (num % 3) return res;
	num /= 3;
	return { num - 1, num, num + 1 };
    }

private:
};

int main()
{
    [[maybe_unused]] Solution solution;
    return 0;
}
